I co-slept out of desperation with my ds due to his sleep habit's- so I could survive until he was 4. Once he moved to his own bed he still woke me up several times a night. He was also still wetting the bed at 7 in addition to night waking. Remember he had some major health issues-so we were in survival mode. Around 7 1/2 we did a sleep study and sure enough- he had obstructive sleep apnea. He was stopping or had shallow breathing approximately every 5 minutes. We did a tonsillectomy and within a few months the sleeping was greatly improved. He also around 7ish started keeping a book next to the bed and started reading at night by himself if he could not sleep. I know his sleep habits are better but he often reads at night if he can't sleep.